Seal for containers



FIG. 1 is a top isometric view of a seal for containers;

FIG. 2 is a top view of the seal;

FIG. 3 is a side view of the seal;

FIG. 4 is a bottom view of the seal; and,

FIG. 5 is a bottom isometric view of the seal. 

The ornamental design for a seal for containers, as shown and described. 